document.body.addEventListener('focusout', () => {
  if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
    // 软键盘收起的事件处理
    setTimeout(() => {
      const scrollHeight = document.documentElement.scrollTop || document.body.scrollTop || 0
      window.scrollTo(0, Math.max(scrollHeight - 1, 0))
    }, 100)
  }
})
